** Zekrom's theme has a crackling thunder effect and Reshiram has a burning fire effect. However, Kyurem does not have a special effect, but has an extra slapped bass part playing in the background.

* The Trio may refer to The {{wp|Three Pure Ones}}, due to their relations with Taoism.

* This legendary trio is the first since the [[legendary birds]] to return to the three types being {{t|Fire}}-, {{t|Electric}}-, and {{type|Ice}}, even though these types are secondary to Dragon.

**Each of the three have [[List of Pokémon with unique type combinations|type combinations unique to themselves]].